Wall clock



FIG. 1 is a front perspective view of the wall clock;

FIG. 2 is a bottom view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a side view thereof;

FIG. 5 is a front view thereof; and,

FIG. 6 is a top view thereof. 

The ornamental design for a wall clock, as shown and described. 